The redundancy of the genetic code is a consequence of ______.
A
Having more codons than amino acids.
B
Having four different letters (As, Cs, Gs, and Us) in the codon alphabet.
C
Having fewer codons than there are amino acids.
D
Each codon having a single amino acid.
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1
Understand the concept of the genetic code: The genetic code is a set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins by living cells.
Recognize the structure of codons: Codons are sequences of three nucleotides (triplets) in mRNA that correspond to specific amino acids or stop signals during protein synthesis.
Identify the number of possible codons: With four different nucleotides (A, C, G, U), there are 4^3 = 64 possible codons.
Compare the number of codons to the number of amino acids: There are only 20 standard amino acids, but 64 possible codons, leading to redundancy in the genetic code.
Understand redundancy: Redundancy means that multiple codons can code for the same amino acid, which is why the genetic code is described as degenerate or redundant.